public class Test09 {
    public static int F(int n){
        if(n <= 0) return 0;
        if(n == 1 || n ==2) return 1;
        int[] dp = new int[n+1];
        dp[1] = 1;
        dp[2] = 1;
        for(int i =3;i<=n;i++){
            dp[i] = dp[i-1]+dp[i-2];
        }
        return dp[n];
    }

    public static void main(String[] args) {
        System.out.println(F(0));
        System.out.println(F(1));
        System.out.println(F(2));
        System.out.println(F(3));
        System.out.println(F(4));
        System.out.println(F(5));
        System.out.println(F(6));
        System.out.println(F(7));

    }
}
